摘要
天津滨海盐土已出现脱盐碱化趋势，其碱化程度从轻度碱化到重度碱化。研究表明，采用以轻化工业排放的废弃物磷石膏为主要原料的有机无机改良剂，对碱化土壤有明显的防治作用，具体表现在土壤ｐＨ、总碱度（Ｃ０３２－＋ＨＣＯ－３）和钠碱化度（ＥＳＰ）明显降低；碱化土壤中的苏打盐（Ｎａ２ＣＯ３＋ＮａＨＣＯ３）消失；利于土壤结构和水分物理性状改良的石膏（ＣａＳＯ４）出现；作物的生长得到明显改善。
There is trend of salt-leaching alkalization in Tianjin coast saline soils, which alkaline degree ranges from light to high. Ardealite was used as a main material mixed up with organic matter to manufacture the organic-inorganic ameliorant. The field experiments indicated that the ameliorant had produced good effect on alkali-affected soils in reducing soil pH value, total basicity(CO2-3+HCO2-3) and ESP greatly. Also soda saline disappeared and gypsum which favoured soil structure appeared. Crop growth was improved.
出处
《农业环境保护》
CSCD
1996年第5期209-212,共4页
Agro-Environmental Protection
关键词
磷石膏
碱化土壤
防治
改良剂
ameliorant
alkali-affected soils
prevention
